期刊
ACS APPLIED MATERIALS & INTERFACES
卷 7, 期 50, 页码 27685-27693出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b08282
关键词
iron vanadate; electrode; nanowire array; one-dimensional; lithium-ion battery
资金
- Natural Science Foundation of China [51201117]
- Natural Science Foundation of Hubei Provience [2015CFA123]
- Scholarship Award for Excellent Doctoral Student - Ministry of Education of China [1343-71134001002]
Development of three-dimensional nanoarchitectures on current collectors has emerged as an effective strategy for enhancing rate capability and cycling stability of the electrodes. Herein, a new type of three-dimensional porous iron vanadate (Fe0.12V2O5) nanowire arrays on a Ti foil has been synthesized by a hydrothermal method. The as-prepared Fe0.12V2O5 nanowires are about 30 nm in diameter and several micrometers in length. The effect of reaction time on the resulting morphology is investigated and the mechanism for the nanowire formation is proposed. As an electrode material used in lithium-ion batteries, the unique configuration of the Fe0.12V2O5 nanowire arrays presents enhanced capacitance, satisfying rate capability and good cycling stability, as evaluated by cyclic voltammetry and galvanostatic discharge-charge cycling. It delivers a high discharge capacity of 293 mAh.g(-1) at 2.0-3.6 V or 382.2 mAh.g(-1) at 1.0-4.0 V after 50 cycles at 30 mA.g(-1)
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